Thanks for the pictures! I could not find the above comparisons 200-400 \ 4 vs. AF-S 500/4. In my opinion, 200-400 \ 4 looks very bad, are you sure that you have a good copy of Zuma? I intend to repeat your test, help me to download the same target. My interest is due to the fact that I intend to change my 200-400 \ 4 and buy 500 \ 4.